CN102734237B - Energy accumulator system and water pump system - Google Patents
Energy accumulator system and water pump system Download PDFInfo
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- CN102734237B CN102734237B CN201210245021.0A CN201210245021A CN102734237B CN 102734237 B CN102734237 B CN 102734237B CN 201210245021 A CN201210245021 A CN 201210245021A CN 102734237 B CN102734237 B CN 102734237B
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Abstract
The invention discloses an energy accumulator system and a water pump system. The energy accumulator system comprises a working energy accumulator (1), a pressure-adjusting energy accumulator (2) and a hydraulic adjustment device, wherein a working port of the working energy accumulator (1) is connected with a working system with pulse flow; the pressure-adjusting energy accumulator (2) is communicated with an inflation port of the working energy accumulator (1) and used for adjusting the pre-inflation pressure of the working energy accumulator (1); and the hydraulic adjustment device is communicated with a liquid filling cavity of the pressure-adjusting energy accumulator (2) and used for adjusting the pressure of the pressure-adjusting energy accumulator (2) so as to adjust the pre-inflation pressure of the working energy accumulator (1) to be matched with the working pressure of the working system. Through the invention, online adjustment of the working pressure of the energy accumulator can be realized.
Description
Technical field
The present invention relates to field of mechanical technique, particularly relate to a kind of accumulator system and water pump system.
Background technique
Accumulator is a kind of energy savings device in hydraulic system (or hydraulic pressure system, pressure system), is generally used for the pressure jump that the pulsating flow in relieving hydraulic system causes.Generally be provided with air bag in accumulator, before accumulator uses, in air bag, be filled with a certain amount of gas, now the pressure of gas is called Preliminary pressure-filled or working pressure.
When accumulator is connected to (Preliminary pressure-filled is slightly less than the normal operating pressure of hydraulic system) in the hydraulic system matched, can a certain amount of liquid be pressed in accumulator when hydraulic system normally works, air bag is compressed, until the pressure of gas and the pressure of hydraulic system balance each other.When there being pulsating flow in hydraulic system, if working pressure is uprushed, accumulator can absorb corresponding flow, with the rising of relieving hydraulic system pressure, if working pressure bust, accumulator will discharge the liquid of corresponding flow, with the reduction of relieving hydraulic system pressure.
But, there is a problem in existing accumulator, after terminating for bladder, the working pressure of accumulator is just determined, cannot change, and at some application scenarios, the working pressure of hydraulic system can change according to working state, at this moment needs to change accumulator, could adapt to different hydraulic system working pressures, the on-line control of accumulator working pressure cannot be realized, namely cannot regulate its working pressure when accumulator works.
Summary of the invention
The object of the present invention is to provide a kind of accumulator system and water pump system, to realize the on-line control to accumulator working pressure.For this reason, the embodiment of the present invention adopts following technological scheme:
A kind of accumulator system, comprises work accumulator, pressure regulation accumulator and hydraulic regulating device, wherein:
The working hole of work accumulator is connected with the work system that there is pulsating flow;
The inflation inlet of pressure regulation accumulator and described work accumulator is interconnected, for regulating the Preliminary pressure-filled of described work accumulator;
Hydraulic regulating device is communicated with the topping up chamber of described pressure regulation accumulator, for regulating the pressure of pressure regulation accumulator, and then regulates the Preliminary pressure-filled of described work accumulator and the working pressure of described work system to match.
Preferably, also comprise detection device, described detection device is connected between described work system and described hydraulic regulating device, for the working pressure of the work system detected is fed back to described hydraulic regulating device.
Preferably, described hydraulic regulating device, comprises hydraulic oil source and the first control valve, wherein:
The delivery outlet of described hydraulic oil source is connected by oil circuit with the working hole of pressure regulation accumulator, and described hydraulic oil source is used for being filled with hydraulic oil in the topping up chamber of pressure regulation accumulator;
The oil circuit that described hydraulic oil source is connected with pressure regulation accumulator is provided with the overflow branch be communicated with fuel tank, described first control valve is arranged in overflow branch, the working pressure of the described work system of described first control valve detected by described detection device, regulate the pressure of hydraulic oil in the topping up chamber of pressure regulation accumulator, and after the pressure of hydraulic oil mates with the working pressure of described work system in this topping up chamber, block overflow branch;
The second control valve is provided with between overflow branch and described hydraulic oil source, for when described hydraulic oil source is oil-filled to pressure regulation accumulator, be communicated with described hydraulic oil source and pressure regulation accumulator, when described hydraulic oil source is not oil-filled to pressure regulation accumulator, block oil-filled oil circuit.
Preferably, the working hole place of pressure regulation accumulator is provided with pressure transducer.
Preferably, the oil circuit between described second control valve and described hydraulic oil source is provided with selector valve;
Described hydraulic oil source is communicated with described second control valve by the first valve position of selector valve, and the oil circuit between described hydraulic oil source and described second control valve is closed by the second valve position of selector valve, and is communicated with other hydraulic systems by oil hydraulic pump.
Preferably, described hydraulic oil source, is specially the hydraulic-pressure pump be communicated with fuel tank.
Preferably, described first control valve, is specially proportional pressure control valve.
Preferably, described second control valve, is specially one-way valve.
Preferably, described target regulates pressure, is specially: according to the working pressure of hydraulic system, hydraulic pressure system or pressure system that work accumulator connects, the working pressure of the work accumulator determined.
A kind of water pump system, comprises accumulator system as above.
Embodiments of the invention have the following advantages, accumulator system, comprise work accumulator, pressure regulation accumulator and hydraulic regulating device, wherein, the working hole of work accumulator is connected with the work system that there is pulsating flow, the inflation inlet of pressure regulation accumulator and described work accumulator is interconnected, for regulating the Preliminary pressure-filled of described work accumulator, hydraulic regulating device is communicated with the topping up chamber of described pressure regulation accumulator, for regulating the pressure of pressure regulation accumulator, and then the Preliminary pressure-filled of described work accumulator and the working pressure of described work system is regulated to match.Thus, the on-line control to accumulator working pressure can be realized.
Accompanying drawing explanation
The structural representation of the accumulator system that Fig. 1 provides for the embodiment of the present invention.
Marginal data
1, work accumulator 2, pressure regulation accumulator
3, oil hydraulic pump 4, proportional pressure control valve
5, overflow branch 6, one-way valve
7, pressure transducer 8, selector valve
9, water pump system 10, detection device
Embodiment
Below in conjunction with the accompanying drawing in the present invention, carry out clear, complete description to the technological scheme in the present invention, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, belongs to the scope of protection of the invention.
Embodiments provide a kind of accumulator system, as shown in Figure 1, comprise work accumulator 1, pressure regulation accumulator 2 and hydraulic regulating device, wherein: the working hole of work accumulator 1 connects with the work system (can be hydraulic pressure system, hydraulic system or pressure system, the present embodiment be described for water pump system) that there is pulsating flow; Pressure regulation accumulator 2 is interconnected, for regulating the Preliminary pressure-filled of work accumulator 1 with the inflation inlet of described work accumulator 1; Hydraulic regulating device is communicated with the topping up chamber of pressure regulation accumulator 2, for regulating the pressure of pressure regulation accumulator 2, and then regulates the Preliminary pressure-filled of work accumulator 1 and the working pressure of work system to match.Working pressure is the steady pressure of work system when normally working and not having pulsating flow.
Concrete, hydraulic regulating device, for in Preliminary pressure-filled adjustment process, by being filled with hydraulic oil or the hydraulic oil in described topping up chamber is discharged in the topping up chamber of pressure regulation accumulator 2, the pressure of the hydraulic oil in described topping up chamber is adjusted to target and regulates pressure, and after being adjusted to target and regulating pressure, keep the constancy of volume of hydraulic oil in the topping up chamber of pressure regulation accumulator 2.This target regulates pressure to be specially, according to the working pressure (being denoted as pressure A) of work system, the Preliminary pressure-filled (being denoted as pressure B) of the work accumulator 1 matched determined, the ratio of pressure B and pressure A is traditionally arranged to be the numerical value between 0.85-0.9.
Wherein, the working hole of work accumulator 1 is connected with water pump system 9, and the working hole of the accumulator 1 that namely works is the total working mouth of this accumulator system, and what accumulator system carried out energy by this working hole to this water pump system 9 stores work of knocking off.The inflation inlet of work accumulator 1 and pressure regulation accumulator 2 is interconnected, then the gas worked in accumulator 1 and pressure regulation accumulator 2 air bag is interconnected, and has identical pressure.
Within the system, when carrying out Preliminary pressure-filled adjustment, can being filled with and discharging hydraulic oil in the topping up chamber of pressure regulation accumulator 2 be passed through, the total volume of gas in the air bag regulating work accumulator 1 and pressure regulation accumulator 2 to be interconnected, thus change the pressure of gas.Carry out in accumulation of energy working procedure at accumulator, actual be by the air bag of work accumulator 1 and pressure regulation accumulator 2 integrally air bag carry out work.
By said structure, by the control to hydraulic oil volume in the topping up chamber of pressure regulation accumulator 2, the Preliminary pressure-filled (or claiming working pressure) of work accumulator 1 can be regulated arbitrarily.
Preferably, can also comprise detection device 10, detection device 10 is connected between work system and hydraulic regulating device, for the working pressure of the work system detected is fed back to hydraulic regulating device.Owing to there is pulsating flow in work system, so when detecting its working pressure, the value that the pressure measuring value in the time period (as 1 minute) can be averaged calculates, and the pressure mean values obtained is working pressure.
Preferably, hydraulic regulating device can comprise hydraulic oil source and the first control valve, and wherein: the delivery outlet of hydraulic oil source is connected by oil circuit with the working hole of pressure regulation accumulator 2, hydraulic oil source is used for being filled with hydraulic oil in the topping up chamber of pressure regulation accumulator 2; The oil circuit that hydraulic oil source is connected with pressure regulation accumulator 2 is provided with the overflow branch 5 be communicated with fuel tank, first control valve is arranged in overflow branch 5, the working pressure of the work system of the first control valve detected by detection device 10, regulate the pressure of hydraulic oil in the topping up chamber of pressure regulation accumulator 2, and after the pressure of hydraulic oil mates with the working pressure of described work system in this topping up chamber, block overflow branch 5; Be provided with the second control valve between overflow branch 5 and hydraulic oil source, for when hydraulic oil source is oil-filled to pressure regulation accumulator 2, is communicated with hydraulic oil source and pressure regulation accumulator 2, when hydraulic oil source is not oil-filled to pressure regulation accumulator 2, blocks oil-filled oil circuit.Wherein, preferably, hydraulic oil source can be hydraulic-pressure pump 3, first control valve be communicated with fuel tank can be proportional pressure control valve 4, and the second control valve can be one-way valve 6.By the adjustment of comparative example relief valve 4 oil pressure relief, the control of hydraulic fluid pressure in the topping up chamber to pressure regulation accumulator 2 can be realized.
When carrying out the adjustment of accumulator working pressure, if need working pressure to be brought up to target to regulate pressure, then can primer fluid press pump 3, and the oil pressure relief of proportional pressure control valve 4 is adjusted to this target adjustment pressure, the working pressure of the work system that target regulates pressure can detect according to detection device 10 is determined, is specifically as follows the Preliminary pressure-filled of the work accumulator 1 mated with the working pressure of work system.After oil hydraulic pump 3 starts, hydraulic oil can be charged in the topping up chamber of pressure regulation accumulator 2, along with air bag is constantly compressed, the pressure of hydraulic oil also will constantly increase, when increasing to target and regulating pressure, proportional pressure control valve 4 is unlocked, and hydraulic oil passing ratio relief valve 4 is back in fuel tank, thus the pressure of hydraulic oil is controlled in target adjustment pressure, namely in air bag, the pressure of gas is also controlled in target and regulates pressure.At this moment, oil hydraulic pump 3 can be closed, and close proportional pressure control valve 4(and the oil pressure relief of proportional pressure control valve 4 is adjusted to a default higher numerical value), working pressure adjustment process terminates.Now, because proportional pressure control valve 4 and one-way valve 6 are all in closed condition, so the volume of the hydraulic oil in the topping up chamber of pressure regulation accumulator 2 can not change.
When carrying out the adjustment of accumulator working pressure, if need working pressure to be reduced to target to regulate pressure, then the oil pressure relief of proportional pressure control valve 4 can be adjusted to this target and regulate pressure, the working pressure of the work system that target regulates pressure can detect according to detection device 10 is determined, is specifically as follows the Preliminary pressure-filled of the work accumulator 1 mated with the working pressure of work system.The oil pressure relief of proportional pressure control valve 4 is reduced to after target regulates pressure, now oil hydraulic pump 3 not work, one-way valve 6 is in closed condition, hydraulic oil in the topping up chamber of pressure regulation accumulator 2 can be back in fuel tank by passing ratio relief valve 4, along with hydraulic oil is discharged from topping up chamber, the volume of air bag can constantly increase, the pressure of gas decreases, the pressure of hydraulic oil also decreases, when being reduced to target and regulating pressure, proportional pressure control valve 4 is closed, at this moment, the oil pressure relief of proportional pressure control valve 4 can be adjusted to a default higher numerical value, it is kept to be in closed condition, working pressure adjustment process terminates.Now, because proportional pressure control valve 4 and one-way valve 6 are all in closed condition, so the volume of the hydraulic oil in the topping up chamber of pressure regulation accumulator 2 can not change.
Normally store in workable process at work accumulator 1, the oil pressure relief of proportional pressure control valve 4 can be kept to be above-mentioned default higher numerical value, the constancy of volume of hydraulic oil in the topping up chamber of pressure regulation accumulator 2 can be ensured like this.
Preferably, the working hole place of pressure regulation accumulator 2 is provided with pressure transducer 7.The pressure that pressure transducer 7 detects is the pressure of hydraulic oil in pressure regulation accumulator 2 topping up chamber, pressure transducer 7 can by the pressure notification that detects to controller, the pressure that controller detects according to pressure transducer 7, can the oil pressure relief of comparative example relief valve 4 regulate more accurately.
Preferably, oil circuit between the second control valve and hydraulic oil source can arrange selector valve 8, hydraulic oil source is communicated with the second control valve by the first valve position of selector valve 8, oil circuit between hydraulic oil source and the second control valve is closed by the second valve position of selector valve 8, and is communicated with other hydraulic systems by hydraulic oil source.Wherein, other hydraulic systems are the hydraulic systems outside the hydraulic system that forms of hydraulic regulating device and pressure regulation accumulator 2, can be any hydraulic systems in the engineering machinery that works of this accumulator system.
Due in actual applications, the adjustment of work accumulator 1 working pressure is not very frequent, so the long-term idle of oil hydraulic pump 3 may be caused, by the setting of selector valve 8, can when not carrying out the adjustment of accumulator working pressure, oil hydraulic pump 3 is connected in other hydraulic system and carries out work, prevent the idle of oil hydraulic pump 3.
The accumulator system that the embodiment of the present invention provides, when carrying out the adjustment of accumulator working pressure, can comprise the following steps:
Step one, water pump system 9(the present embodiment that acquisition work accumulator 1 connects is described for water pump system, in actual applications, this accumulator system can be applied to any hydraulic system, hydraulic pressure system or pressure system) working pressure, and determine to be that the target of default ratio regulates pressure with the ratio of this working pressure.
Wherein, this working pressure can be the steady pressure of water pump system 9 when normally working and not having pulsating flow, specifically can be detected by detection device 10, get the preset length time period pressure mean values in (as 1 minute), as this working pressure.The ratio of target adjustment pressure and this working pressure is traditionally arranged to be the numerical value between 0.85-0.9.
Step 2, by emptying for the liquid (or gas) in work accumulator 1 topping up chamber.Specifically can reduce the pressure of the water pump system 9 that work accumulator 1 connects, make it be less than the working pressure of work accumulator 1.
Now, in pressure regulation accumulator 2 topping up chamber, the pressure of hydraulic oil is the working pressure of work accumulator 1, can be recorded by pressure transducer 7, also can call the last time carry out working pressure regulate time target regulate pressure.
Step 3, if the pressure of hydraulic oil is less than target adjustment pressure in pressure regulation accumulator 2 topping up chamber, is then filled with hydraulic oil by hydraulic regulating device in pressure regulation accumulator 2 topping up chamber, until the pressure of hydraulic oil equals target adjustment pressure in topping up chamber; If the pressure of hydraulic oil is greater than target adjustment pressure in pressure regulation accumulator 2 topping up chamber, then by hydraulic regulating device, the hydraulic oil in pressure regulation accumulator 2 topping up chamber is discharged, until the pressure of hydraulic oil equals target adjustment pressure in topping up chamber.Concrete being filled with can with reference to embodiment of the present invention foregoing with the process of exudate force feed.
Step 4, keeps the constancy of volume of hydraulic oil in pressure regulation accumulator 2 topping up chamber by hydraulic regulating device.Specifically the oil pressure relief of proportional pressure control valve 4 can be adjusted to a default higher numerical value, if oil hydraulic pump 3 is in starting state and is connected with pressure regulation accumulator 2, also oil hydraulic pump 3 to cut out, or pass through the switching of selector valve 8 valve position, the connection of cutting-off liquid press pump 3 and pressure regulation accumulator 2.
The embodiment of the present invention additionally provides a kind of water pump system, comprises accumulator system as above.
Accumulator system in embodiments of the invention, comprise work accumulator, pressure regulation accumulator and hydraulic regulating device, wherein, the working hole of work accumulator is connected with the work system that there is pulsating flow, the inflation inlet of pressure regulation accumulator and described work accumulator is interconnected, for regulating the Preliminary pressure-filled of described work accumulator, hydraulic regulating device is communicated with the topping up chamber of described pressure regulation accumulator, for regulating the pressure of pressure regulation accumulator, and then the Preliminary pressure-filled of described work accumulator and the working pressure of described work system is regulated to match.Thus, the on-line control to accumulator working pressure can be realized.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. an accumulator system, is characterized in that, comprises work accumulator (1), pressure regulation accumulator (2) and hydraulic regulating device, wherein:
The working hole of work accumulator (1) is connected with the work system that there is pulsating flow;
Pressure regulation accumulator (2) is interconnected, for regulating the Preliminary pressure-filled of described work accumulator (1) with the inflation inlet of described work accumulator (1);
Hydraulic regulating device is communicated with the topping up chamber of described pressure regulation accumulator (2), for regulating the pressure of pressure regulation accumulator (2), and then the described Preliminary pressure-filled of work accumulator (1) and the working pressure of described work system is regulated to match;
Wherein, described accumulator system also comprises detection device (10), described detection device (10) is connected between described work system and described hydraulic regulating device, for the working pressure of the work system detected is fed back to described hydraulic regulating device;
Described hydraulic regulating device comprises hydraulic oil source and the first control valve, wherein:
The delivery outlet of described hydraulic oil source is connected by oil circuit with the working hole of pressure regulation accumulator (2), and described hydraulic oil source is used for being filled with hydraulic oil in the topping up chamber of pressure regulation accumulator (2);
The oil circuit that described hydraulic oil source is connected with pressure regulation accumulator (2) is provided with the overflow branch (5) be communicated with fuel tank, described first control valve is arranged in overflow branch (5), the working pressure of the described work system of described first control valve detected by described detection device (10), regulate the pressure of hydraulic oil in the topping up chamber of pressure regulation accumulator (2), and after the pressure of hydraulic oil mates with the working pressure of described work system in this topping up chamber, block overflow branch (5);
The second control valve is provided with between overflow branch (5) and described hydraulic oil source, for when described hydraulic oil source is oil-filled to pressure regulation accumulator (2), be communicated with described hydraulic oil source and pressure regulation accumulator (2), when described hydraulic oil source is not oil-filled to pressure regulation accumulator (2), block oil-filled oil circuit.
2. accumulator system as claimed in claim 1, it is characterized in that, the working hole place of pressure regulation accumulator (2) is provided with pressure transducer (7).
3. accumulator system as claimed in claim 2, is characterized in that,
Oil circuit between described second control valve and described hydraulic oil source is provided with selector valve (8);
Described hydraulic oil source is communicated with described second control valve by the first valve position of selector valve (8), oil circuit between described hydraulic oil source and described second control valve is closed by the second valve position of selector valve (8), and is communicated with other hydraulic systems by oil hydraulic pump (3).
4. the accumulator system as described in any one of claim 1-3, is characterized in that, described hydraulic oil source, is specially the oil hydraulic pump (3) be communicated with fuel tank.
5. the accumulator system as described in any one of claim 1-3, is characterized in that, described first control valve, is specially proportional pressure control valve (4).
6. the accumulator system as described in any one of claim 1-3, is characterized in that, described second control valve, is specially one-way valve (6).
7. a water pump system, is characterized in that, comprises the accumulator system as described in any one of claim 1-6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210245021.0A CN102734237B (en) | 2012-07-16 | 2012-07-16 | Energy accumulator system and water pump system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210245021.0A CN102734237B (en) | 2012-07-16 | 2012-07-16 | Energy accumulator system and water pump system |
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| CN102734237A CN102734237A (en) | 2012-10-17 |
| CN102734237B true CN102734237B (en) | 2015-07-15 |
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| CN201210245021.0A Active CN102734237B (en) | 2012-07-16 | 2012-07-16 | Energy accumulator system and water pump system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6509881B2 (en) | 2014-02-04 | 2019-05-08 | ダナ イタリア エスピーエー | In-line hydraulic hybrid system and method of operating an in-line hydraulic hybrid system |
| US10247205B2 (en) | 2014-02-04 | 2019-04-02 | Dana Italia Spa | Accumulator racks |
| EP3102853B1 (en) | 2014-02-04 | 2019-11-06 | DANA ITALIA S.p.A | Series parallel hydraulic hybrid architecture |
| US10220697B2 (en) | 2014-02-04 | 2019-03-05 | Dana Italia Spa | Powerboost hub |
| CN104841656B (en) * | 2014-07-10 | 2017-12-08 | 北汽福田汽车股份有限公司 | It is a kind of to clean water circuit system and there is its concrete pump set |
| EP3002147A1 (en) | 2014-10-02 | 2016-04-06 | Dana Italia S.p.A. | Dual drive driveline |
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| US5438829A (en) * | 1992-06-05 | 1995-08-08 | Hitachi Koki Co., Ltd. | Air compression system having two separate compressed air accumulators |
| FR2796105A1 (en) * | 1999-07-08 | 2001-01-12 | Elf Exploration Prod | Charging underwater hydraulic pressure accumulator so the pressure difference between the inside and outside can be kept constant during immersion |
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| CN102192202A (en) * | 2011-06-21 | 2011-09-21 | 何学才 | Energy accumulator station formed by welding air tank and mixing piston energy accumulator |
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| CN101476571B (en) * | 2009-01-24 | 2011-01-05 | 燕山大学 | Parameter self-adapting and regulation leather bag type hydraulic accumulator |
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| US5438829A (en) * | 1992-06-05 | 1995-08-08 | Hitachi Koki Co., Ltd. | Air compression system having two separate compressed air accumulators |
| FR2796105A1 (en) * | 1999-07-08 | 2001-01-12 | Elf Exploration Prod | Charging underwater hydraulic pressure accumulator so the pressure difference between the inside and outside can be kept constant during immersion |
| CN1502013A (en) * | 2000-11-28 | 2004-06-02 | Л | Emergency energy release for hydraulic energy storage systems |
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